Double-cone rotary vacuum dryer

Abstract

The utility model discloses a double-cone rotary vacuum drier which comprises a rack, a drying cylinder and a vacuum exhaust pipe, a feeding port and a discharging port are respectively fixed at the upper end and the lower end of the rack in a penetrating mode, a sealing cover is covered on the top face of the feeding port, and a plurality of inserting rods are arranged in the sealing cover at equal intervals. A connecting plate is slidably connected into each inserting rod in a sleeved mode, and the end, extending to the outer side of the inserting rod, of each connecting plate is sleeved with a nut in a threaded mode. According to the utility model, through the rotatable rubber scraping plate, during drying, the rubber scraping plate rotates along with the drying cylinder and intermittently scrapes materials adhered to the filter screen, and during discharging, the materials are stirred through the rotatable discharging scraping plate to avoid blockage, and materials on the inner wall of the drying cylinder can be scraped; the problems that when an existing double-cone rotary vacuum dryer absorbs and removes moisture, a vacuum exhaust pipe is prone to being blocked, and residues are prone to being left in discharged materials are solved, and the practicability of the vacuum dryer is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to double -cone rotary vacuum drying machine technical field, especially a double -cone rotary vacuum drying machine. BACKGROUND

[0002] Double -cone rotary vacuum drying machine is the rotary tank body of double -cone, and the steam or hot water is passed into the jacket under the vacuum state in the jar, and the heat is contacted with the wet material through the inner wall of the tank body, and the water vapor evaporated after the wet material absorbs heat is drawn away through the vacuum exhaust pipe by the vacuum pump, since the tank body is in the vacuum state, and the rotation of the tank body makes the material constantly up and down inside and outside, speeds up the drying speed of the material, improves the drying efficiency, reaches the purpose that uniformly dries, is suitable for the vacuum drying and mixing of powder, granular material of medicine, food, chemical industry etc.

[0003] When double -cone rotary vacuum drying machine is running, needs to extract water vapor through the exhaust pipe, and the material to be dried in the interior is easy to adhere on the filter screen of the pipe mouth under the action of suction in the extraction process, causes the vacuum exhaust pipe to be blocked, and after drying, the material is discharged, and part of the material adheres on the inner side cylinder wall of the drying cylinder, cannot be discharged in time, causes the material to be easily left in the interior of the drying machine when discharging, and therefore, we propose a double -cone rotary vacuum drying machine. UTILITY MODEL CONTENTS

[0004] The problem to be solved by the utility model in the prior art is that the vacuum exhaust pipe is easy to be blocked when the double -cone rotary vacuum drying machine absorbs moisture, and the discharge is easy to have residual.

[0005] In order to solve the above technical problems, the utility model provides the following technical scheme: a double -cone rotary vacuum drying machine, it includes frame, drying cylinder and vacuum exhaust pipe, the upper and lower ends of the frame are respectively penetrated and fixed with feed inlet and discharge outlet, the top surface of the feed inlet is covered with sealing cover, a plurality of fixed grooves are equidistantly arranged in the inside of the sealing cover, each fixed screw rod is slidably connected in each fixed groove, the bottom of each fixed screw rod is fixed on the top surface of the feed inlet, a nut is threadedly connected to the end of each fixed screw rod extending to the outside of the fixed groove, the bottom of the discharge outlet is provided with a discharge valve, one end of the vacuum exhaust pipe extending to the inside of the drying cylinder is fixed with detachable protective sleeve, the support rod is rotatably arranged in the inside of the drying cylinder, the side of the support rod close to the vacuum exhaust pipe is fixed with a support rod, the side of the support rod towards the protective sleeve is fixed with a rubber scraper, the upper and lower end sidewalls of the support rod are both fixed with fixed plates through bolts, a plurality of discharge scrapers are rotatably connected between the upper and lower fixed plates, and the outer surface of each discharge scraper is slidably attached to the inner wall of the frame.

[0006] As a preferred scheme of the double-cone rotary vacuum drying machine, the end of the vacuum exhaust pipe close to the supporting rod is fixed with a connecting screw pipe, a protective sleeve is threadedly sleeved on the connecting screw pipe, a filter screen is fixed inside the end of the protective sleeve away from the vacuum exhaust pipe, and the side of the rubber scraper away from the supporting rod is slidably attached to the filter screen.

[0007] As a preferred scheme of the double-cone rotary vacuum drying machine, the center position of the sealing cover is rotationally connected with a crank handle through a bearing, one end of the crank handle extending into the drying cylinder is fixed with a plug-in block, and the plug-in block is inserted into the top of the supporting rod.

[0008] As a preferred scheme of the double-cone rotary vacuum drying machine, the outer surface of the crank handle inside the sealing cover is fixed with a lower limiting plate, the crank handle above the sealing cover is fixed with an upper limiting plate, a sealing sleeve is rotationally sleeved on the crank handle above the upper limiting plate, the top surface of the sealing cover outside the plug-in block is fixed with a fixed screw pipe, and the sealing sleeve is threadedly sleeved on the fixed screw pipe.

[0009] As a preferred scheme of the double-cone rotary vacuum drying machine, the bottom end of the supporting rod is fixed with a plug-in rod, the plug-in rod is inserted into the connecting plate, the connecting plate is fixed on the inner wall of the drying cylinder, a rotating hole matched with the plug-in rod is formed in the connecting plate, the diameter of the rotating hole is smaller than the diameter of the supporting rod, the distance between the top surface of the connecting plate and the bottom surface of the lower limiting plate is equal to the height of the supporting rod, and a rectangular groove matched with the plug-in block is formed in the top surface of the supporting rod.

[0010] As a preferred scheme of the double-cone rotary vacuum drying machine, the adjacent two discharge scrapers and the fixed plate and the discharge scrapers are rotationally connected, and the outer side of each discharge scraper is provided as an arc matched with the inner wall of the drying cylinder.

[0011] As a preferred scheme of the double-cone rotary vacuum drying machine, the outer surface of the fixed screw pipe and the inside of the sealing sleeve are provided with threads matched with each other, the height of the inside of the sealing sleeve is equal to the height of the fixed screw pipe, the outer diameter of the upper limiting plate is equal to the inner diameter of the fixed screw pipe, and the top surface of the upper limiting plate is flush with the top surface of the fixed screw pipe.

[0012] The double-cone rotary vacuum drying machine has the beneficial effects that: during drying, the rubber scraper rotates with the drying cylinder to intermittently scrape off the adhered materials on the filter screen; during discharging, the materials are stirred to avoid blockage, and the materials on the inner wall of the drying cylinder can be scraped off, thus solving the problems of blockage of the vacuum exhaust pipe and residue of the discharged materials during absorption of moisture in the existing double-cone rotary vacuum drying machine, and improving the practicability of the vacuum drying machine. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0014] Figure 1 This is an overall structural diagram of a double-cone rotary vacuum dryer.

[0015] Figure 2 This is a diagram of the internal structure of a double-cone rotary vacuum dryer.

[0016] Figure 3 This is a structural diagram of the vacuum exhaust pipe of a double-cone rotary vacuum dryer.

[0017] Figure 4 for Figure 2 A magnified schematic diagram of the structure at point A in the diagram.

[0018] Figure 5 This is a schematic diagram of the split structure of the sealing cover of a double-cone rotary vacuum dryer. Detailed Implementation

[0019] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0020] Reference Figures 1-5 This embodiment is a double-cone rotary vacuum dryer, including a frame 1, a drying cylinder 2, and a vacuum exhaust pipe 5. The frame 1 has a feed inlet 3 and a discharge outlet 4 fixedly connected to its upper and lower ends, respectively. A sealing cover 6 covers the top surface of the feed inlet 3. The sealing cover 6 has several evenly spaced fixing grooves 13 inside. Each fixing groove 13 has a fixing screw 14 slidably fitted inside it. The bottom of each fixing screw 14 is fixed to the top surface of the feed inlet 3. A nut is threaded onto one end of each fixing screw 14 extending to the outside of the fixing groove 13. The discharge outlet 4... A discharge valve is provided at the bottom. A detachable protective sleeve 17 is fixed to one end of the vacuum exhaust pipe 5 that extends into the drying cylinder 2. A support rod 7 is rotatably installed inside the drying cylinder 2. A support rod 15 is fixed to the side of the support rod 7 near the vacuum exhaust pipe 5. A rubber scraper 16 is fixed to the side of the support rod 15 facing the protective sleeve 17. Fixing plates 8 are fixed to the upper and lower side walls of the support rod 7 by bolts. Several feeding scrapers 9 are rotatably connected between the upper and lower fixing plates 8. The outer surface of each feeding scraper 9 slides against the inner wall of the frame 1.

[0021] In the embodiment, the vacuum exhaust pipe 5 is fixed with a connecting screw pipe 18 at one end close to the support rod 7, the connecting screw pipe 18 is threadedly sleeved with a protective sleeve 17, the protective sleeve 17 is internally fixed with a filter screen 19 away from the end of the vacuum exhaust pipe 5, the rubber scraper 16 is slidably attached to the filter screen 19 away from one side of the support rod 15, and the detachable design of the filter screen 19 facilitates cleaning of the filter screen 19, thereby avoiding pollution of the subsequent materials to be dried by the residual materials on the filter screen 19 during vacuum.

[0022] In the embodiment, the sealing cover 6 is rotationally connected with a crank 20 at the center position through a bearing, one end of the crank 20 extending into the drying cylinder 2 is fixed with a plug 21, the plug 21 is inserted into the top of the support rod 7, and the crank 20 and the plug 21 facilitate control of rotation of the support rod 7, thereby driving the material scraping plate 9 to rotate and scrape the materials.

[0023] In the embodiment, the crank 20 in the sealing cover 6 is fixed with a lower limit plate 22 on the outer surface, the crank 20 above the sealing cover 6 is fixed with an upper limit plate 23, the crank 20 above the upper limit plate 23 is rotationally sleeved with a sealing sleeve 25, the top surface of the sealing cover 6 outside the plug 21 is fixed with a fixed screw pipe 24, the sealing sleeve 25 is threadedly sleeved on the fixed screw pipe 24, during drying, the sealing sleeve 25 is screwed onto the fixed screw pipe 24 to be fixed, cooperated with the lower limit plate 22 inside, the sealing property of the inside of the drying cylinder 2 can be ensured, thereby ensuring the drying effect inside the drying cylinder 2.

[0024] In the embodiment, the support rod 7 is fixed with a plug rod 10 at the bottom end, the plug rod 10 is inserted into the inside of a connecting plate 11, the connecting plate 11 is fixed on the inner wall of the drying cylinder 2, the connecting plate 11 is internally provided with a rotating hole 12 matched with the plug rod 10, the diameter of the rotating hole 12 is smaller than that of the support rod 7, the distance between the top surface of the connecting plate 11 and the bottom surface of the lower limit plate 22 is equal to the height of the support rod 7, and the top surface of the support rod 7 is provided with a rectangular groove matched with the plug 21, when the support rod 7 is installed, the plug rod 10 is inserted into the rotating hole 12, the plug 21 is inserted into the inside of the support rod 7, and the connecting plate 11 clamps the vacuum exhaust pipe 5, and the rectangular design of the plug 21 facilitates driving of the support rod 7 to rotate.

[0025] In the embodiment, each of the two adjacent material scraping plates 9 and the material scraping plate 9 and the fixed plate 8 is rotationally connected, the outer side of each material scraping plate 9 is provided with an arc matched with the inner wall of the drying cylinder 2, which facilitates rotation and folding of the material scraping plate 9 and scraping of the materials on the inner wall of the drying cylinder 2.

[0026] In this embodiment, the outer surface of the fixed screw pipe 24 and the inner surface of the sealing sleeve 25 are provided with matching threads, the height of the inner surface of the sealing sleeve 25 is equal to the height of the fixed screw pipe 24, the outer diameter of the upper limiting plate 23 is equal to the inner diameter of the fixed screw pipe 24, the top surface of the upper limiting plate 23 is flush with the top surface of the fixed screw pipe 24, which facilitates the fixation of the sealing sleeve 25 and the fixed screw pipe 24, and ensures that when the sealing sleeve 25 is screwed onto the fixed screw pipe 24, the inner wall of the sealing sleeve 25 abuts against the upper limiting plate 23, further ensuring the sealing performance.

[0027] Working principle: when the dryer is running, the nut is twisted to release the clamping and fixation of the sealing cover 6 on the nut, the sealing cover 6 is rotated to align the fixed slot 13 with the fixed screw rod 14, after alignment, the sealing cover 6 is pulled upwards to open the feeding port 3, the material to be dried is poured into the inside of the drying cylinder 2, the sealing cover 6 is closed on the feeding port 3, the fixed screw rod 14 passes through the fixed slot 13, the sealing cover 6 is rotated to make the fixed slot 13 and the end of the fixed screw rod 14 misaligned, and the nut is twisted to clamp and fix the sealing cover 6 again, when the sealing cover 6 is closed on the feeding port 3, the insert block 21 is inserted into the rectangular slot at the top of the support rod 7, then the rack 1 is opened, the rack 1 runs to drive the drying cylinder 2 to rotate, the vacuum pump in the rack 1 extracts water vapor through the vacuum exhaust pipe 5, when the drying cylinder 2 rotates, the support rod 7 and the support rod 15 rotate around the vacuum exhaust pipe 5, the support rod 15 drives the rubber scraper 16 to repeatedly scrape the material on the surface of the filter screen 19 to avoid clogging of the filter screen 19, after drying is completed, the rack 1 drives the drying cylinder 2 to the outlet opening downward, opens the discharge valve of the outlet opening 4, and discharges the material, when discharging, the sealing sleeve 25 is twisted to release the fixation between the sealing sleeve 25 and the fixed screw pipe 24, the handle 20 is rotated to drive the support rod 7 to rotate through the insert block 21, when the support rod 7 rotates, the discharge scraper 9 scrapes the adhered material on the inner wall of the drying cylinder 2, and the material on the inner wall of the drying cylinder 2 outside the upper and lower ends of the vacuum exhaust pipe 5 is scraped, when it is necessary to maintain the inside of the drying cylinder 2, the nut is twisted to open the feeding port 3, the insert block 21 is pulled out of the support rod 7, the screw on the support rod 7 is twisted to release the fixation between the support rod 7 and the fixed plate 8, the fixed plate 8 and the discharge scraper 9 are pulled, the discharge scraper 9 is rotated to be attached to the support rod 7, the support rod 7, the fixed plate 8, the support rod 15 and the rubber scraper 16 can be pulled out through the feeding port 3, the protective sleeve 17 is rotated to be separated from the connecting screw pipe 18, and the filter screen 19 can be taken out for cleaning, when installing, the support rod 7 is inserted into the inside of the drying cylinder 2, the insert rod 10 is inserted into the rotating hole 12, the discharge scraper 9 is pushed downward to rotate to be attached to the inner wall of the drying cylinder 2, the top fixed plate 8 is fixed with the support rod 7, the sealing cover 6 is fixed on the top surface of the feeding port 3.

[0028] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, and they should be covered in the scope of the claims of the present application.

Claims

1. A double-cone rotary vacuum dryer comprising a frame (1), a drying cylinder (2) and a vacuum exhaust pipe (5), the upper and lower ends of the frame (1) are respectively penetrated and fixed with a feeding port (3) and a discharging port (4), the top surface of the feeding port (3) is covered with a sealing cover (6), and the bottom of the discharging port (4) is provided with a discharging valve, characterized in that: A plurality of fixed grooves (13) are equidistantly arranged in the sealing cover (6), each of the fixed grooves (13) is slidably sleeved with a fixed screw rod (14), the bottom of each of the fixed screw rods (14) is fixed on the top surface of the feeding port (3), one end of each of the fixed screw rods (14) extending to the outside of the fixed groove (13) is threadedly sleeved with a nut, one end of the vacuum exhaust pipe (5) extending to the inside of the drying cylinder (2) is fixed with a detachable protective sleeve (17), the supporting rod (7) is rotatably arranged in the drying cylinder (2), the side of the supporting rod (7) close to the vacuum exhaust pipe (5) is fixed with a supporting rod (15), the side of the supporting rod (15) facing the protective sleeve (17) is fixed with a rubber scraper (16), the upper and lower end side walls of the supporting rod (7) are both fixed with a fixed plate (8) through bolts, a plurality of discharging scrapers (9) are rotatably connected between the upper and lower fixed plates (8), the outer surface of each of the discharging scrapers (9) is slidably attached to the inner wall of the rack (1). ​ 2. A double-cone rotary vacuum dryer according to claim 1, characterized in that: The end of the vacuum exhaust pipe (5) close to the supporting rod (7) is fixed with a connecting screw pipe (18), the connecting screw pipe (18) is threadedly sleeved with the protective sleeve (17), the end of the protective sleeve (17) away from the vacuum exhaust pipe (5) is fixed with a filter screen (19), the side of the rubber scraper (16) away from the supporting rod (15) is slidably attached to the filter screen (19).

3. A double-cone rotary vacuum dryer according to claim 1, characterized in that: The center of the sealing cover (6) is rotatably connected with a crank handle (20) through a bearing, one end of the crank handle (20) extending to the inside of the drying cylinder (2) is fixed with a plug block (21), the plug block (21) is inserted into the top of the supporting rod (7).

4. A double-cone rotary vacuum dryer according to claim 3, characterized in that: The outer surface of the crank handle (20) in the sealing cover (6) is fixed with a lower limit plate (22), the upper end of the crank handle (20) is fixed with an upper limit plate (23), the sealing sleeve (25) is rotatably sleeved on the crank handle (20) above the upper limit plate (23), the top surface of the sealing cover (6) on the outer side of the plug block (21) is fixed with a fixed screw pipe (24), the sealing sleeve (25) is threadedly sleeved on the fixed screw pipe (24).

5. A double-cone rotary vacuum dryer according to claim 4, characterized in that: The bottom end of the supporting rod (7) is fixed with a plug rod (10), the plug rod (10) is inserted into the inside of the connecting plate (11), the connecting plate (11) is fixed on the inner wall of the drying cylinder (2), the inside of the connecting plate (11) is provided with a rotating hole (12) matched with the plug rod (10), the diameter of the rotating hole (12) is smaller than the diameter of the supporting rod (7), the distance between the top surface of the connecting plate (11) and the bottom surface of the lower limit plate (22) is equal to the height of the supporting rod (7), the top surface of the supporting rod (7) is provided with a rectangular groove matched with the plug block (21).

6. A double-cone rotary vacuum dryer according to claim 1, characterized in that: Each of the discharging scrapers (9) is rotatably connected between the adjacent two discharging scrapers (9) and between the fixed plate (8) and the discharging scraper (9), the outer side of each of the discharging scrapers (9) is provided with an arc matched with the inner wall of the drying cylinder (2).

7. A double-cone rotary vacuum dryer according to claim 4, characterized in that: The outer surface of the fixed screw pipe (24) and the inner surface of the sealing sleeve (25) are provided with matched threads, the height of the inner surface of the sealing sleeve (25) is equal to the height of the fixed screw pipe (24), the outer diameter of the upper limiting plate (23) is equal to the inner diameter of the fixed screw pipe (24), and the top surface of the upper limiting plate (23) is flush with the top surface of the fixed screw pipe (24).

Images